Card-cylinder and mode of making the same



(No Model.)

'W. P. MAXFIELD.

CARD CYLINDER AND MODE OF MAKING THE SAME.

Patented Mar.6,1883.

Pmmm mr. Vlahingim. n. a

UNITED STATES PATENT OFFICE.

WILLIAM P. MAXFIELD, OF PHILADELPHIA,PENNSYLVANIA.

CABD=CYLINDER AND MODE OF MAKING THE SAME SPECIFICATION forming part of Letters Patent No. 273,573, dated March 6 1883.

Application filed January 9, 18 82. (No model.) I

certain Improvements in Gard-Cylinders and in the Mode of Makipg Same, of which the following is a specification.

The object of my invention is to construct a cylinder for carding-machines which will be lighter and less expensive than a metal cylinder, and not so liableas a wooden cylinder to distortion or injury due to uneven expansion andcontraction. This object I attain inthe manner which I-will now proceed to describe, reference being bad totheaccoui'panying drawings, in which- Figure l is a longitudinal-section, partly in elevation, of my improved card-cylinder; and Fig. 2, a transverse section, showing the method of making the cylinder.

The cylinder comprises a central shaft, A, a number of frames, B, secured thereto, and having hubs or and annular flanges b, and a covering, D, formed by continuously coiling a sheet or sheets of paper until a covering of the desired thickness is obtained.

In carrying out my invention I prefer to first secure the frames B to the shaft A in their proper positions, and then to secure to the flanges b of the frames a cylinder, d, of light sheet metal or heavy pasteb'oard, which serves as a base or foundation for the cover ing D, this cylinder being of a length equal to that of the desired card-cylinder, or being made in sections, as preferred. The covering D is formed by attaching to the cylinder d one end of a sheet, 00, of paper of a width equal to the length of the cylinder, and then slowly rotating the shaft A in the direction of the arrow, while the sheet w is acted upon by a roller, 6, the journals of which are parallel with the axis of the shaft A, and are acted upon by suitable springs tending to force the roller against the paper, said journal's, however, being free to move laterally as the winding operation progresses, and the covering increases in thickness. Paste may be introduced between the layers as the winding progresses, in order to render the covering compact and homogeneous, and the roller 6 may, if desired, be heated, in order to facilitate the drying of this cement. If the sheet of paper is exhausted before the covering reaches the proper thickness, the end of a second sh et may be attached thereto, and the winding proceeded with.

Acylinder made according to my invention presents a smooth, uniform surface adapted for the reception of the card-clothing, which may be secured either by tacks or cement, the cylinder being lighter and less expensive than one of metal, and preserving its truth under circumstances where a wooden cylinder is apt to become distorted or injured by unevenness in expansion and contraction.

In Fig. 1 I have shown a wrapping of cardclothing at one end of the cylinder.

After the covering D is completed the ends of the same are preferably protected b flanged caps f, secured to the shaft A or to thc'end frames, B, as shown in Fig. 1.

Instead of winding the paper :20 directly upon the frame-work of the card-cylinder, the covering D may be made by winding the paper upon a separate former or mandrel, the covering so made being then appliedto the frames B, and secured thereto in any suitable manner.

I have described my invention in connection with the cylinder of a carding-machine; but it'will be evident that the same applies to the strippers, workers, and other rolls of the machine.

I am aware that it has been proposed to make card-cylinders of papier-rnach cast in molds; but a cylindermade in this way does not possess, in the same measure as one made according to my invention, the desirable qualities of strength, compactness, and uniformity. I am also aware that belt-pulleys have been covered with continuously-coiled strips of paper, and that barrels have been made in the same way. Hence I do not desire to cover, broadly, a paper cylinder of the character shown in the drawings; nordo I claim, broadly, the method described of making such a cylinder; but I I claim as my invention- 1. A card-cylinder comprising a central shaft, A, a frame-work, B,a covering, D, consisting of a coil or wrapping of paper, and card-clothing secured to the said paper covering D, as set forth.

2. A card -cylinder comprising a central In testimonywhereofl havesigned my name shaft, A, frames B, a cylinder, 61, a covering, to this specification in the presence oftwo sub- D, consisting of a coil or wrapping of paper, scribing Witnesses. and card-clothing secured to said covering D,

5 as set forth. WM. P. MAXFIELD.

3. The combination, in a cylinder for carding-machines, of the shaft A, the frame-Work Witnesses:

B, the coiled paper covering D, and the pro- HARRY DRURY, teoting-caps f at the ends of the cylinder, as HARRY SMITH. 10 set forth. 

